Iron, Cobalt, Or Nickel Containing Patents (Class 420/538)
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Patent number: 5900210Abstract: A high-strength and high-ductility aluminum-base alloy consisting of a composition of general formula: Al.sub.ba1 Mn.sub.a Si.sub.b or Al.sub.ba1 Mn.sub.a Si.sub.b TM.sub.c (wherein TM is one or more elements selected from the group consisting of Ti, V, Cr, Fe, Co, Ni, Cu, Y, Zr, La, Ce and Mm; and a, b and c are, in atomic percentages, 2.ltoreq.a.ltoreq.8, 0.5.ltoreq.b.ltoreq.6, 0<c.ltoreq.4, and a.gtoreq.b), wherein the alloy contains quasi-crystals. The an aluminum-base alloy have superior mechanical properties such as high hardness, high strength and high ductility.Type: GrantFiled: March 7, 1997Date of Patent: May 4, 1999Assignee: YKK CorporationInventors: Erik Buchler, Kazuhiko Kita
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Patent number: 5879478Abstract: The invention relates to an aluminum alloy for thixoforming with the composition (by weight): Si: 5%-7.2% Cu: 1%-5% Mg<1% Zn<3% Fe<1.5% other elements<1% each and<3% in total, with % Si<7.5-% Cu/3, which, when reheated to the semisolid state to the point at which a liquid fraction ratio between 35 and 55% is obtained, has an absence of non-remelted polyhedral silicon crystals.Type: GrantFiled: February 26, 1997Date of Patent: March 9, 1999Assignee: Aluminium PechineyInventors: Willem Loue, Michel Garat
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Patent number: 5851317Abstract: A composite material comprises an aluminum or aluminum alloy matrix having generally spherical, atomized quasicrystalline aluminum-transition metal alloy reinforcement particles disposed in the matrix to improve mechanical properties. A composite article can be made by consolidating generally spherical, atomized quaiscrystalline aluminum-transition metal alloy particles and aluminum or aluminum alloy particles to form a body that is cold and/or hot reduced to form composite products, such as composite plate or sheet, with interfacial bonding between the quasicrystalline particles and the aluminum or aluminum alloy matrix without damage (e.g. cracking or shape change) of the reinforcement particles. The cold and/or hot worked compositehibits substantially improved yield strength, tensile strength, Young's modulus (stiffness).Type: GrantFiled: January 31, 1997Date of Patent: December 22, 1998Assignee: Iowa State University Research Foundation, Inc.Inventors: Suleyman B. Biner, Daniel J. Sordelet, Barbara K. Lograsso, Iver E. Anderson
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Patent number: 5837388Abstract: The present invention relates to an Al alloy solder material comprising a composition containing Si in an amount of more than 7.0 to 12.0% or less by weight, Cu in an amount of more than 0.4 to 8.0% or less by weight, Zn in an amount of more than 0.5 to 6.0% or less by weight, Mn in an amount of more than 0.05 to 1.2% or less by weight and Fe in an amount of more than 0.05 to 0.5% or less by weight, or at need, further one or both of In and Sn respectively in an amount of 0.3% or less by weight, with the remainder being Al and inevitable impurities. A brazing sheet clad with the solder material and used for various members of the heat exchanger enables satisfactory brazing at a temperature as low as 570.degree. to 580.degree. C. and is excellent in corrosion resistance. Since the brazing sheet is brazed at a low temperature, a high-strength material having a low melting point is used for a core material of a fin, a tube or the like.Type: GrantFiled: August 5, 1996Date of Patent: November 17, 1998Assignee: The Furukawa Electric Co., Ltd.Inventors: Takeyoshi Doko, Koji Okada
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Patent number: 5809393Abstract: A sputtering target comprising a body of metal such as aluminum and its alloy with an ultrafine grain size and small second phase. Also described is a method for making an ultra-fine grain sputtering target comprising melting, atomizing, and depositing atomized metal to form a workpiece, and fabricating the workpiece to form a sputtering target. A method is also disclosed that includes the steps of extruding a workpiece through a die having contiguous, transverse inlet and outlet channels of substantially identical cross section, and fabricating the extruded article into a sputtering target. The extrusion may be performed several times, producing grain size of still smaller size and controlled grain texture.Type: GrantFiled: October 30, 1995Date of Patent: September 15, 1998Assignee: Johnson Matthey Electronics, Inc.Inventors: John Alden Dunlop, Jun Yuan, Janine Kiyabu Kardokus, Roger Alan Emigh
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Patent number: 5795541Abstract: An aluminum alloy sheet for printing plate contains Fe: 0.2 to 0.6 Wt %, Si: 0.03 to 0.15 Wt %, Ti: 0.005 to 0.05 Wt %, Ni: 0.005 to 0.20 Wt %, and remainder of Al and inevitable impurity, wherein a ratio of Ni content and Si content satisfies 0.1.ltoreq.Ni/Si.ltoreq.3.7. The aluminum alloy sheet is manufactured by homogenizing an aluminum alloy ingot at a temperature in a range of 500.degree. to 630.degree. C., after performing hot rolling at start temperature in a range of 400.degree. to 450.degree. C., providing cold rolling and intermediate annealing, and further performing final cold rolling. By this, the aluminum alloy sheet for printing plate is prevented from pit generation upon dipping in electrolytic solution in a condition where an electric power is not applied. Uniformity of grained surface of the aluminum alloy sheet by electrolytic treatment can be improved.Type: GrantFiled: December 26, 1996Date of Patent: August 18, 1998Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Masaki Tanigawa, Shinichiro Hosono, Kozo Hoshino, Yoshihiko Asakawa
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Patent number: 5779824Abstract: An aluminum alloy support for a planographic printing plate is disclosed, which is an aluminum alloy plate comprising 0<Fe.ltoreq.0.20 wt %, 0.ltoreq.Si.ltoreq.0.13 wt %, Al.gtoreq.99.7 wt % and the balance of inevitable impurity elements, wherein the number of intermetallic compounds present in the arbitrary thickness direction with in 10 .mu.m from the plate surface is from 100 to 3,000 per mm.sup.2 and the intermetallic compound has an average particle size of from 0.5 to 8 .mu.m, with the intermetallic compounds having a particle size of 10 .mu.m or more being in a proportion by number of 2% or less. Also disclosed is a method for producing the above-described aluminum alloy support.Type: GrantFiled: July 20, 1995Date of Patent: July 14, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Hirokazu Sawada, Hirokazu Sakaki, Tsutomu Kakei, Akio Uesugi, Masaya Matsuki
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Patent number: 5705205Abstract: A process for increasing the yield of natural vanilla flavor. Green vanilla pods are hydrated. The resulting hydrated pods are ground, forming a liquid phase and a solid phase. The resulting ground hydrated product of green vanilla pods is treated with an enzymatic system including at least one enzyme. The enzyme system possesses from about 10 to about 1000 units of beta-glucose activity per gram of green vanilla pods. The ground hydrated green vanilla pods and the enzymatic system are incubated at a temperature of from about 10.degree. C. to about 40.degree. C. for a period of between about 2 hours and about 30 hours sufficient to allow the release of the vanilla flavor. The liquid phase containing the vanilla flavor is separated from the solid phase.Type: GrantFiled: September 16, 1996Date of Patent: January 6, 1998Assignee: Pernod RichardInventor: Pascal Marc Brunerie
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Patent number: 5667600Abstract: Disclosed is a practical aluminum-based alloy containing 1 to 99 weight percent beryllium and improved methods for the investment casting of net shape aluminum-beryllium alloy parts.Type: GrantFiled: March 31, 1994Date of Patent: September 16, 1997Assignee: Brush Wellman, Inc.Inventors: Fritz C. Grensing, James M. Marder, Jere H. Brophy
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Patent number: 5667751Abstract: This invention relates to a catalytic fuel composition capable of reducing pollutants in the combustion gasses generated upon combustion of the same. A catalytic material is combined with a liquid, petroleum-based fuel, mixed and solid particles are separated out to give the catalytic fuel product. The catalytic material predominantly comprises a plagioclase feldspar belonging mainly to the albite-anorthite series, and contains small amount of mica, kaolinite and serpentine, and optionally contains magnetite. An alloy material is also disclosed, comprising a mixture of the above-described catalytic material and a metal. The alloy material exhibits unique properties relative to the metal component alone, such as increased tensile strength, improved heat resistance, improved acid resistance, improved corrosion resistance, as well as exhibiting unusual conductive properties.Type: GrantFiled: July 17, 1996Date of Patent: September 16, 1997Inventor: Jack H. Taylor, Jr.
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Patent number: 5652877Abstract: The present invention relates to alloys in which the essential constituent is aluminum, metal deposits produced from these alloys, substrates coated with these alloys and the applications of these alloys. The alloys of the present invention are characterized in thatthey have the following atomic composition (I):Al.sub.a Cu.sub.b Co.sub.b' (B,C).sub.c M.sub.d N.sub.e I.sub.f(I)a+b+b'+c+d+e+f=100, expressed as number of atoms, a.gtoreq.50, 0.ltoreq.b<14, 0.ltoreq.b'.ltoreq.22, 0<b+b'.ltoreq.30, 0.ltoreq.c.ltoreq.5, 8.ltoreq.d.ltoreq.30, 0.ltoreq.e.ltoreq.4, f.ltoreq.2, where M represents one or more elements chosen from Fe, Cr, Mn, Ni, Ru, Os, Mo, V, Mg, Zn and Pd; N represents one or more elements chosen from W, Ti, Zr, Hf, Rh, Nb, Ta, Y, Si, Ge and the rare earths; I represents the inevitable production impurities;and they contain at least 30% by mass of one or more quasicrystalline phases.Type: GrantFiled: April 5, 1995Date of Patent: July 29, 1997Assignee: Centre National de la RechercheInventors: Jean-Marie Dubois, Antoine Pianelli
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Patent number: 5650025Abstract: A wear-resistant aluminum alloy for automobile parts, particularly for automobile engine and transmission parts requiring high strength, toughness, and wear-resistance, prepared by increasing the amount of silicon, copper, magnesium, and titanium, and decreasing the amount of zinc.Type: GrantFiled: November 9, 1995Date of Patent: July 22, 1997Assignee: Hyundai Motor CompanyInventor: Do-Suck Han
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Patent number: 5647919Abstract: A high strength, rapidly solidified alloy consisting of aluminum and, added thereto, additive elements. The mean crystal grain size of the aluminum is 40 to 1000 nm, the mean size of particles of a stable phase or a metastable phase of various intermetallic compounds formed from the aluminum and the additive element and/or various intermetallic compounds formed from the additive elements themselves is 10 to 800 nm, and the intermetallic compound particles are distributed in a volume fraction of 20 to 50% in a matrix consisting of aluminum. The rapidly solidified alloy has an improved strength at room temperature and a high toughness and can maintain the properties inherent in a material produced by the rapid solidification process even when it undergoes a thermal influence during working.Type: GrantFiled: October 5, 1994Date of Patent: July 15, 1997Assignee: YKK CorporationInventors: Kazuhiko Kita, Hidenobu Nagahama
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Patent number: 5618358Abstract: A new aluminum based alloy having properties which mimic homogenized DC cast 3003 alloy and a low-cost method for manufacturing it are described. The alloy contains 0.40% to 0.70% Fe, 0.10% to less than 0.30% Mn, more than 0.10% to 0.25% Cu, less than 0.10% Si, optionally up to 0.10% Ti and the balance Al and incidental impurities. The alloy achieves properties similar to homogenized DC cast 3003 when continuously cast followed by cold rolling and if desired annealing at final gauge. Suprisingly no other heat treatments are required.Type: GrantFiled: March 1, 1995Date of Patent: April 8, 1997Inventors: Thomas Davisson, Sadashiv Nadkarni, Douglas Reesor
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Patent number: 5607523Abstract: A high-strength aluminum-based alloy consisting of a composition represented by the general formula: Al.sub.bal Q.sub.a M.sub.b X.sub.c, wherein Q is at least one element selected from the group consisting of Mn and Cr; M is at least one element selected from the group consisting of Co, Ni, and Cu; X is at least one of rare earth elements including Y, or Misch metal (Mm); and a, b and c are, in atomic percentages, 1.ltoreq.a.ltoreq.7, 0.5.ltoreq.b.ltoreq.5, and 0<c.ltoreq.5, the aluminum-based alloy containing quasicrystals in the structure thereof. The quasicrystals may be of an icosahedral phase (I phase), a decagonal phase (D phase), or a crystalline phase akin thereto and the structure may comprise the quasicrystalline phase and a phase formed of any one of an amorphous phase, aluminum, and a supersaturated aluminum solid solution or a composite (mixed phase) thereof.Type: GrantFiled: January 9, 1995Date of Patent: March 4, 1997Assignees: Tsuyoshi Masumoto, Akihisa Inoue, YKK CorporationInventors: Tsuyoshi Masumoto, Akihisa Inoue, Junichi Nagahora, Toshisuke Shibata, Kazuhiko Kita
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Patent number: 5593516Abstract: An aluminum-based alloy composition having improved combinations of strength and fracture toughness consists essentially of 2.5-5.5 percent copper, 0.10-2.30 percent magnesium, with minor amounts of grain refining elements, dispersoid additions and impurities and the balance aluminum. The amounts of copper and magnesium are controlled such that the solid solubility limit for these elements in aluminum is not exceeded. The inventive alloy composition may also include 0.10-1.00 percent silver for improved mechanical properties. The alloys are useful as high strength, high fracture toughness components for aircraft and aerospace structural parts.Type: GrantFiled: June 7, 1995Date of Patent: January 14, 1997Assignee: Reynolds Metals CompanyInventor: William A. Cassada, III
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Patent number: 5593515Abstract: A high strength aluminum-based alloy, which having a composition of the general formula: Al.sub.bal Q.sub.a M.sub.b X.sub.c T.sub.d, wherein Q represents at least one element selected from the group consisting of Mn, Cr, V, Mo and W; M represents at least one element selected from the group consisting of Co, Ni, Cu and Fe; X represents at least one element selected from rare earth elements including Y or Mm; T represents at least one element selected from the group consisting of Ti, Zr and Hf; and a, b, c and d represent the following atomic percentages: 1.ltoreq.a.ltoreq.7, 0>5, 0>c.ltoreq.5 and 0>d.ltoreq.2, and contains quasi-crystals in the structure thereof. The alloy of the present invention is excellent in the hardness and strength at both room temperature and a high temperature, and also in thermal resistance and ductility.Type: GrantFiled: March 27, 1995Date of Patent: January 14, 1997Assignees: Tsuyoshi Masumoto, Akihisa Inoue, Teikoku Piston Ring Co., Ltd., Yamaha Corporation, YKK CorporationInventors: Tsuyoshi Masumoto, Akihisa Inoue, Hisamichi Kimura, Yoshiyuki Shinohara, Yuma Horio, Kazuhiko Kita
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Patent number: 5582660Abstract: A process for fabricating an aluminum alloy rolled sheet particularly suitable for use for an automotive body, the process comprising: (a) providing a body of an alloy comprising about 0.8 to about 1.3 wt. % silicon, about 0.2 to about 0.6 wt. % magnesium, about 0.5 to about 1.8 wt. % copper, about 0.01 to about 0.1 wt. % manganese, about 0.01 to about 0.2 wt. % iron, the balance being substantially aluminum and incidental elements and impurities: (b) working the body to produce a sheet; (c) solution heat treating the sheet; and (d) rapidly quenching the sheet. In a preferred embodiment, the solution heat treat is performed at a temperature greater than 840.degree. F. and the sheet is rapidly quenched. The resulting sheet has an improved combination of excellent formability and good strength.Type: GrantFiled: December 22, 1994Date of Patent: December 10, 1996Assignee: Aluminum Company of AmericaInventors: Rolf B. Erickson, Shawn J. Murtha
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Patent number: 5525169Abstract: A process for fabricating an aluminum alloy rolled sheet particularly suitable for use for an automotive body, the process comprising: (a) providing a body of an alloy comprising: about 0.8 to about 1.5 wt. % silicon, about 0.2 to about 0.65 wt. % magnesium, about 0.02 to about 0.1 wt. % copper, about 0.01 to about 0.1 wt. % manganese, about 0.05 to about 0.2 wt. % iron; and the balance being substantially aluminum and incidental elements and impurities; (b) working the body to produce a the sheet; (c) solution heat treating the sheet; and (d) rapidly quenching the sheet. In a preferred embodiment, the solution heat treat is preformed at a temperature greater than 860.degree. F. and the sheet is quenched by a water spray. The resulting sheet has an improved combination of formability, strength and corrosion resistance.Type: GrantFiled: May 11, 1994Date of Patent: June 11, 1996Assignee: Aluminum Company of AmericaInventor: Shawn J. Murtha
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Patent number: 5523050Abstract: A method is described for preparing a refined or reinforced eutectic or hyper-eutectic metal alloy, comprising: melting the eutectic or hyper-eutectic metal alloy, adding particles of non-metallic refractory material to the molten metal matrix, mixing together the molten metal alloy and the particles of refractory material, and casting the resulting mixture under conditions causing precipitation of at least one intermetallic phase from the molten metal matrix during solidification thereof such that the intermetallics formed during solidification wet and engulf said refractory particles. The added particles may be very small and serve only to refine the precipitating intermetallics in the alloy or they may be larger and serve as reinforcing particles in a composite with the alloy. The products obtained are also novel.Type: GrantFiled: March 15, 1993Date of Patent: June 4, 1996Assignee: Alcan International LimitedInventors: David J. Lloyd, Iljoon Jin
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Patent number: 5522950Abstract: An A-rated aluminum alloy suitable for machining, said alloy consisting essentially of: about 0.15-1.0 wt. % copper, about 1.01-1.5 wt. % tin, about 0.65-1.35 wt. % magnesium, about 0.4-1.1 wt. % silicon, about 0.00 2-0.35 wt. % manganese, up to about 0.5 wt. % iron, up to about 0.15 wt. % chromium and up to about 0.15 wt. % titanium, the remainder substantially aluminum. On a preferred basis, this alloy contains about 0.51-0.75 wt. % copper, about 1.1-1.3 wt. % tin, about 0.7-0.9 wt. % magnesium and about 0.45-0.75 wt. % silicon. The alloy is substantially free of lead, bismuth, nickel, zirconium and cadmium. There is further disclosed an improved method for making screw machine stock or wire, rod and bar product from this alloy by casting, preheating, extruding, solution heat treating, cold finishing and thermally processing the aforementioned alloy composition.Type: GrantFiled: September 16, 1994Date of Patent: June 4, 1996Assignee: Aluminum Company of AmericaInventors: Charles W. Bartges, Thomas J. Klemp, Gerald D. Scott, Matthew J. Allyn
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Patent number: 5516382Abstract: An aluminum alloy useful for drawing and/or ironing, particularly of drink cans. The alloy consists essentially of, in weight percent, Fe<0.25; Si<0.25; Mn from 1.05 to 1.6; Mg from 0.7 to 2.5; Cu from 0.20 to 0.6; Cr from 0 to 0.35; Ti from 0 to 0.1; V from 0 to 0.1; other elements: each <0.05; total<0.15; and remainder Al.Type: GrantFiled: October 20, 1994Date of Patent: May 14, 1996Assignee: Pechiney RhenaluInventor: Guy-Michel Raynaud
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Patent number: 5509978Abstract: The present invention provides a high strength and anti-corrosive aluminum-based alloy essentially consisting of an amorphous structure or a multiphase amorphous/fine crystalline structure, which is represented by the general formula Al.sub.x M.sub.y R.sub.z. In this formula, M represents at least one metal element selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Cu, Zr, Nb, Mo and Ni, and R represents at least one element or mixture selected from the group consisting of Y, Ce, La, Nd and Mm (misch metal). Additionally, in the formula, x, y and z represent the composition ratio, and are atomic percentages satisfying the relationships of x+y+z=100, 64.5.ltoreq.x.ltoreq.95, 5.ltoreq.y.ltoreq.35, and 0<z.ltoreq.0.4.Type: GrantFiled: February 9, 1995Date of Patent: April 23, 1996Assignee: Yamaha CorporationInventors: Tsuyoshi Masumoto, Akihisa Inoue, Yuma Horio
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Patent number: 5494540Abstract: An abrasion-resistant aluminum alloy consists of 13.0 to 16.0 percent by weight of Si, 4.0 to 5.0 percent by weight of Cu, at least 0.8 and less than 1.4 percent by weight of Mg, not more than 0.8 percent by weight of Fe, not more than 0.1 percent by weight of either P or at least one of Na, Sb and Sr and a remainder of Al and unavoidable impurities. The alloy's microstructure contains coarse Si particles of 15 to 40 .mu.m mean particle diameter, fine Si particles of not more than 5 .mu.m mean particle diameter and other fine particles, with a homogeneous dispersion of all of these particles. This abrasion-resistant aluminum alloy has specific abrasion loss of not more than 10.times.10.sup.-7 mm.sup.2 /kg.Type: GrantFiled: January 26, 1995Date of Patent: February 27, 1996Assignee: Sumitomo Electric Industries, Ltd.Inventors: Shigeki Ochi, Tosio Fujiwara
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Patent number: 5478418Abstract: An aluminum alloy powder for sliding members includes Fe in an amount of from 0.5 to 5.0% by weight, Cu in an amount of from 0.6 to 5.0% by weight, B in an amount of from 0.1 to 2.0% by weight and the balance of Al. An aluminum alloy includes a matrix made from the aluminum alloy powder and at least one member dispersed, with respect to whole of the matrix taken 100% by weight, in the matrix, and selected from the group consisting of B in an amount of from 0.1 to 5.0% by weight, boride in an amount of from 1.0 to 15% by weight and iron compound in an amount of from 1.0 to 15% by weight, and thereby it exhibits the tensile strength of 400 MPa or more. The aluminum alloy powder and the aluminum alloy are suitable for making sliding members like valve lifters for automobiles.Type: GrantFiled: April 28, 1994Date of Patent: December 26, 1995Assignees: Toyota Jidosha Kabushiki Kaisha, Toyo Aluminum Kabushiki KaishaInventors: Hirohisa Miura, Yasuhiro Yamada, Hirohumi Michioka, Jun Kusui, Akiei Tanaka
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Patent number: 5472920Abstract: The invention relates to the thermal barriers, to a process and material for their production, and to their application. Thermal barriers consist of a material comprising at least one refractory oxide with low thermal diffusivity and at least one quasicrystalline aluminum alloy, the proportion of which represents from 2-30% by volume. They can be produced by deposition of a mixture of refractory oxide and of quasicrystalline alloy in vapor phase, or from a mixture of refractory oxide and quasicrystalline aluminum alloy in the molten state, or else by deposition onto the support to be protected with the aid of an oxygen-gas torch fed with material using a flexible cord which contains the refractory oxide and the quasicrystalline alloy. The applications include the protection of components of aircraft or motor vehicle engines, of aeronautical or aerospace components, of chemical reactors or of electrical households appliances.Type: GrantFiled: December 22, 1993Date of Patent: December 5, 1995Assignee: Societe Nouvelle de Metallisation IndustriesInventors: Jean-Marie Dubois, Philippe Cathonnet
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Patent number: 5466312Abstract: A method for making aluminum foil comprises providing an aluminum-based alloy composition consisting essentially of about 0.05 to 0.20 weight percent silicon, about 0.02 to 0.50 weight percent iron, about 0.05 to 0.30 weight percent copper and balance aluminum and inevitable impurities and grain refining elements, wherein the ratio of iron to silicon ranges between about 2:1 and 4:1. The aluminum-alloy composition is continuously cast using a unitary and chilled casting wheel to form a cast strip product of desired width and gauge. The cast strip product is then homogenized, cold rolled and recrystallized annealed into an aluminum foil product. The aluminum-based alloy composition produces a single roll cast product having minimum microshrinkage porosity on the air surface thereof. Reducing or eliminating the microshrinkage porosity in the cast product results in an aluminum foil product having a minimum of pinholes in the final foil product.Type: GrantFiled: July 15, 1994Date of Patent: November 14, 1995Assignee: Reynolds Metals CompanyInventors: Bennie R. Ward, Jr., Sander A. Levy, George A. Sloan
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Patent number: 5453244Abstract: There is disclosed a novel aluminum alloy bearing which exhibits a more excellent fatigue resistance than conventional bearings even under such conditions of use as at a high temperature and under a high load. The aluminum alloy bearing has an aluminum bearing alloy layer containing, by weight, 1 to 10% Zn, 0.1 to 5% Cu, 0.05 to 3% Mg, 0.1 to 2% Mn, 0.1 to 5% Pb, 0.1 to 2% V, and 0.03 to 0.5% in total of Ti--B, and further may optionally contain not more than 8% Si, 0.05 to 0.5% Sr, and Ni, Co and Cr. The alloy may be bonded to a steel metal back sheet, and a surface layer may be formed on the surface of the bearing. By use of the composition of the alloy of the invention, the fatigue resistance of the aluminum alloy bearings has been improved, and such an improved bearing can fully achieve a bearing performance even under severe conditions of use as at high temperature and under a high load.Type: GrantFiled: November 10, 1994Date of Patent: September 26, 1995Assignee: Daido Metal Company Ltd.Inventors: Tadashi Tanaka, Masaaki Sakamoto, Tohru Kato, Yoshiaki Sato
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Patent number: 5431751Abstract: A high strength aluminum alloy is expressed by a general formula, Al.sub.a X.sub.b Mm.sub.c, in which "X" stands for at least one element selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zr, "Mm" stands for a misch metal, a content "a" of aluminum falls in a range of from 95.2 to 97.5 atomic %, and a content "b" of "X" and a content "c" of the "Mm" fall in a hatched area enclosed by points "A," "B," "C" and "D" of accompanying FIG. 1 on atomic % basis, and whose metallic phase includes microcrystalline phases or mixed phases containing amorphous phases in a volume content of less than 50% and the balance of microcrystalline phases. As a result, the amorphous phases or the microcrystalline phases are dispersed uniformly in its base microcrystalline phases appropriately, and at the same time the thus generating base microcrystalline phases are reinforced by forming solid solutions including the "Mm" and the transition metal element "X" as well.Type: GrantFiled: February 5, 1993Date of Patent: July 11, 1995Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yukio Okochi, Kazuaki Sato, Tetsuya Suganuma, Akira Kato, Tsuyoshi Masumoto, Akihisa Inoue
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Patent number: 5432011Abstract: The present invention relates to alloys in which the essential constituent is aluminum, metal deposits produced from these alloys, substrates coated with these alloys and the applications of these alloys. The alloys of the present invention are characterized in that they have the following atomic composition: Al.sub.a Cu.sub.b Co.sub.b, (B,C).sub.c M.sub.d N.sub.e I.sub.f, a+b+b'+c+d+e+f=100, expressed as number of atoms, a.gtoreq.50, 0.ltoreq.b<14, 0.ltoreq.b'.ltoreq.22, 0<b+b'.ltoreq.30, 0.ltoreq.c.ltoreq.5, 8.ltoreq.d.ltoreq.30, 0.ltoreq.e.ltoreq.4, f.ltoreq.2, where M represents one of more elements chosen from Fe, Cr, Mn, Ni, Ru, Os, Mo, V Mg, Zn and Pd; N represents one or more elements chosen from W, Ti, Zr, Hf, Rh, Nb, Ta, Y, Si, Ge and the rare earths; I represents the inevitable production impurities; and they contain at least 30% by mass of one or more quasicrystalline phases.Type: GrantFiled: September 8, 1994Date of Patent: July 11, 1995Assignee: Centre National de la Recherche ScientifiqueInventors: Jean-Marie DuBois, Antoine Pianelli
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Patent number: 5409661Abstract: An aluminum alloy consists essentially of 90 to 99.5% by weight of matrix and 0.5 to 10% by weight of a dispersant dispersed within the matrix. The matrix comprises 10 to 25% by weight of Si, 5 to 20% by weight of Ni, 1 to 5% by weight of Cu and the rest of Al and impurity elements. The dispersant is at least one selected from the group consisting of 0.5 to 10% of nitride, boride, carbide and oxide. The aluminum alloy shows excellent tensile strength and wear resistance.Type: GrantFiled: May 24, 1994Date of Patent: April 25, 1995Assignees: Toyota Jidosha Kabushiki Kaisha, Toyo Aluminium Kabushiki KaishaInventors: Kunihiko Imahashi, Hirohisa Miura, Yasuhiro Yamada, Hirohumi Michioka, Jun Kusui, Akiei Tanaka
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Patent number: 5380379Abstract: There is claimed an aluminum alloy sheet product having a composition consisting essentially of: about 1.35-1.6 wt. % iron; about 0.3-0.6 wt. % manganese; about 0.1-0.4 (and preferably about 0.22-0.4) wt. % copper; about 0.05-0.1 wt. % titanium; about 0.01-0.02 wt. % boron; up to about: 0.2 wt. % silicon, 0.02 wt. % chromium, 0.005 wt. % magnesium and 0.05 wt. % zinc; and a balance of aluminum, incidental elements and impurities. This composition is cast to an initial thickness greater than about 3 mm (0.12 inch). The end product exhibits improved strength and surface properties through a manufacturing process which includes: heat treating at one or more temperatures above about 450.degree. C. (842.degree. F.), and preferably below about 500.degree. C. (932.degree. F.); before rolling to final gauge. When cold rolled to various thicknesses, this sheet product exhibits ultimate tensile strength values ranging from 11-15 kg/mm.sup.2 for thin and intermediate gauge products, to about 27-30 kg/mm.sup.2 (38.4-42.Type: GrantFiled: August 18, 1993Date of Patent: January 10, 1995Assignee: Alcoa Aluminio Do Nordeste S.A.Inventors: Klaus P. Maiwald, Marcio D. Soares, Aldenir J. Clemente
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Patent number: 5374295Abstract: Disclosed are heat resistant aluminum alloy powders and alloys including Ni, Si, either at least one of Fe and Zr or at least one of Zr and Ti. For instance, the alloy powders or alloys consist essentially of Ni in an amount of from 5.7 to 20% by weight, Si in an amount of from 0.2 to 25% by weight, at least one of Fe in an amount of from 0.6 to 8.0% by weight and Cu in an amount of from 0.6 to 5.0% by weight, and the balance of Al. The alloy powders or alloys are optimum for a matrix of heat and wear resistant aluminum alloy-based composite materials including at least one of nitride particles and boride particles in an amount of 0. 5 to 10% by weight with respect to the whole composite material taken as 100% by weight. The alloy powders, alloys and composite materials are satisfactory applicable to the component parts of the recent automobile engines which should produce a high output.Type: GrantFiled: March 3, 1993Date of Patent: December 20, 1994Assignees: Toyota Jidosha Kabushiki Kaisha, Toyo Aluminum Kabushiki KaishaInventors: Hirohisa Miura, Kunihiko Imahashi, Yasuhiro Yamada, Hirohumi Michioka, Jun Kusui, Akiei Tanaka
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Patent number: 5306362Abstract: The invention provides an aluminum alloy material consisting essentially of, by weight percent, 1% to 1.8% Cu, 0.8% to 1.4% Mg, 0.2% to 0.39% Si, 0.5% to 0.4% Fe, 0.05% to 0.40% Mn, with the balance aluminum with normal impurities. The alloy forms two precipitation phases during heat treatment and age hardening: a beta phase of Mg.sub.2 Si and an S' phase of Al.sub.2 CuMg. The alloy has improved formability without significant sacrifice of strength, and is particularly suited to be formed into automobile sheet metal parts such as hood lids, trunks lids, and fenders.Type: GrantFiled: September 23, 1992Date of Patent: April 26, 1994Assignee: Alcan International LimitedInventors: Alok K. Gupta, David J. Lloyd, Pierre H. Marois
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Patent number: 5286316Abstract: An aluminum-based alloy composition having improved corrosion resistance and high extrudability consists essentially of about 0.1-0.5% by weight of manganese, about 0.05-0.12% by weight of silicon, about 0.10-0.20% by weight of titanium, about 0.15-0.25% by weight of iron and the balance aluminum, wherein the aluminum alloy is essentially copper free. The inventive alloy is useful in automotive applications, in particular, heat exchanger tubing and finstock, and foil packaging. The process provided by the invention uses a high extrusion ratio and produces a product having high corrosion resistance.Type: GrantFiled: April 3, 1992Date of Patent: February 15, 1994Assignee: Reynolds Metals CompanyInventor: Kenneth D. Wade
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Patent number: 5204191Abstract: The invention relates to materials for coating metal alloys or metals, which materials are intended to improve the performance of said alloys or metals.These materials have a composition which corresponds to the general formula Al.sub.a Cu.sub.b Fe.sub.c X.sub.d I.sub.e, wherein X represents one or more elements chosen from V, Mo, Ti, Zr, Nb, Cr, Mn, Ru, Rh, Ni, Mg, W, Si and the rare earths, and I represents the inevitable manufacturing impurities, e.ltoreq.2, 14.ltoreq.b.ltoreq.30, 7.ltoreq.c.ltoreq.20, O.ltoreq.d.ltoreq.10, with c+d.ltoreq.10 and a+b+c+d+e=100% of the number of atoms, and they contain at least 40% by mass of an icosahedral quasi-crystalline phase and/or a decagonal quasi-crystalline phase and have a grain size greater than 1,000 nm in the quasi-crystalline phase.These materials are useful, in particular, for coating copper, aluminium alloys or copper alloys in the manufacture of cooking utensils, anti-friction bearings, anti-wear surfaces and reference surfaces.Type: GrantFiled: January 6, 1992Date of Patent: April 20, 1993Assignee: Centre National de la Recherche ScientifiqueInventors: Jean-Marie Dubois, Pierre Weinland
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Patent number: 5174955Abstract: A heat-resisting aluminum alloy contains manganese ranging from 6 to 8% by weight, iron ranging from 0.5 to 2% by weight, zirconium ranging from 0.03 to 0.5% by weight, and copper ranging from 2 to 5% by weight, the balance being essentially aluminum. The aluminum alloy has been confirmed to be high in mechanical strength both at ordinary temperatures and at high temperatures while to be suitable for producing an article by using so-called atomization process.Type: GrantFiled: July 22, 1986Date of Patent: December 29, 1992Assignee: Nissan Motor Co., Ltd.Inventors: Masahiko Shioda, Syunsuke Suzuki, Akira Matsuyama, Yoshihiro Maki
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Patent number: 5167919Abstract: An alloy composition of aluminum, zinc, iron, copper, and calcium when held molten at about 800 degrees C. by induction heating is capable of complete destruction of organic compounds that may be liquid or associated with sludges and at the same time is capable of reacting with metallic compounds in the sludges or liquid wastes to either dissolve or render the metals non-leachable.Type: GrantFiled: March 15, 1990Date of Patent: December 1, 1992Inventor: Anthony S. Wagner
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Patent number: 5162100Abstract: An aluminum-based bearing alloy of the invention comprises 3-40% Sn, 0.1-10% Pb, 0.1-5% Cu, 0.1-3% Sb, total 0.05-1% of Ti and B which satisfy the equation: B/Ti+B=0.1 to 0.35, and the balance being essentially Al. The aluminum-based bearing alloy according to the present invention has excellent fatigue resistance and anti-seizure property.Type: GrantFiled: August 27, 1991Date of Patent: November 10, 1992Assignee: Daido Metal Company, Ltd.Inventors: Tadashi Tanaka, Masaaki Sakamoto, Koichi Yamamoto, Yoshiaki Sato, Tohru Kato
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Patent number: 5106436Abstract: An improved eutectic aluminum-silicon alloy having a relatively high level of bismuth is provided which is particularly wear-resistant and sufficiently self-lubricating so as to be suitable for use in a wearing component even when poorly lubricated. The relatively high bismuth level within the alloy cooperates with the other elemental additions so as to provide a sufficiently low friction bearing surface (or self-lubricity), which significantly enhances the wear resistant properties of the alloy. In addition, the preferred alloy also has relatively substantial additions of both nickel and copper, which results in the homogeneous distribution of hard wear resistant nickel and copper phases throughout. The improved aluminum alloy should minimize wear and alleviate galling during use.Type: GrantFiled: September 30, 1991Date of Patent: April 21, 1992Assignee: General Motors CorporationInventor: Muftau M. Alabi
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Patent number: 5030416Abstract: An aluminum alloy that is suitable as material for cathode foils in electrolytic capacitors comprises0.9 to 1.7% iron0.1 to 0.8% manganesemax. 0.15% siliconmax. 0.3% copper,the remainder being aluminum with further trace elements, individually <0.05%, in total <0.15%, and the total iron and manganese content amounting to at most 1.9%.Type: GrantFiled: September 19, 1989Date of Patent: July 9, 1991Assignees: Swiss Aluminium Ltd., Swiss Aluminium Ltd.Inventors: Martin Werner, Margarete Bloeck, Heinz Bichsel
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Patent number: 5006054Abstract: Low density, high temperature and aluminum-rich intermetallic alloys displaying excellent elevated temperature properties, including oxidation resistance, are disclosed. Based on the aluminum/titanium system, specifically modifications of Al.sub.3 Ti compositions, useful alloys are derived from changes in crystal structure and properties effected by selected-site substitution alloying with manganese and/or chromium, and, where used, vanadium, or equivalent site-substituting alloying elements.Type: GrantFiled: March 30, 1989Date of Patent: April 9, 1991Assignee: Technology Development CorporationInventor: Donald E. Nikkola
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Patent number: 4911767Abstract: The present invention provides high corrosion-resistant aluminum-based alloys having a composition represented by the general formula Al.sub.x M.sub.y (wherein: M is one metal element selected from the group consisting of Y, La, Ce, Nd and Sm; and x and y range from 75 to 98 atomic percent and from 2 to 25 atomic percent, respectively), the aluminum-based alloy containing at least 50% by volume of amorphous phase. The aluminum-based alloys are especially useful as high corrosion-resistant, high strength, high heat-resistant materials in various applications and, since they exhibit superplasticity in the vicinity of their crystallization temperature, they can be processed into various bulk materials, for example, by extrusion, press working or hot-forging at the temperatures within the range of the crystallization temperature .+-.100.degree. C.Type: GrantFiled: March 16, 1989Date of Patent: March 27, 1990Assignee: Yoshida Kogyo K. K.Inventors: Tsuyoshi Masumoto, Akihisa Inoue, Katsumasa Odera
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Patent number: 4909867Abstract: The present invention provides high-strength and heat resistant aluminum alloys having a composition represented by the general formula Al.sub.a M.sub.b La.sub.c (wherein M is at least one metal element selected from the group consisting of Fe, Co, Ni, Cu, Mn and Mo; and a, b and c are atomic percentages falling within the following ranges:65.ltoreq.a.ltoreq.93, 4.ltoreq.b.ltoreq.25 and 3.ltoreq.c.ltoreq.15),the aluminum alloys containing at least 50% by volume of amorphous phase. The aluminum alloys are especially useful as high strength and high heat resistant materials in various applications and, since the aluminum alloys specified above exhibit a superplasticity in the vicinity of their crystallization temperature, they can be readily worked into bulk forms by extrusion, press working or hot forging in the vicinity of the crystallization temperature.Type: GrantFiled: September 12, 1988Date of Patent: March 20, 1990Assignees: Yoshida Kogyo K. K., Tsuyoshi MasumotoInventors: Tsuyoshi Masumoto, Akihisa Inoue, Katsumasa Odera, Masahiro Oguchi
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Patent number: 4828794Abstract: An aluminum core alloy for use in the manufacture of brazed heat exchanger assemblies having high resistance to corrosion and moderate strength. A preferred composition of the aluminum base alloy consists of from 0.13 to 0.22% titanium, from 0.8 to 1.5% manganese, 0.4 to 0.6% copper, up to 0.7% iron, up to 0.3% silicon, up to 0.3% magnesium, with the balance being essentially aluminum and normal impurities. Another preferred composition, which is a modification of the preceding composition, includes 0.3 to 0.6% magnesium.Type: GrantFiled: March 6, 1987Date of Patent: May 9, 1989Assignee: Reynolds Metals CompanyInventors: Darwin H. Scott, Kenneth D. Wade
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Patent number: 4824494Abstract: An aluminum-based alloy foil for use as negative electrodes of elecrolytic capacitors, the foil containing 0.1 to 1.0% of Cu, 0.01 to 1.0% of Ni, 0.002 to 0.05% of Ti, and optionally 0.0005 to 0.02% of B, wherein the balance is substantially aluminum.Type: GrantFiled: February 10, 1988Date of Patent: April 25, 1989Assignee: Showa Aluminum Kabushiki KaishaInventors: Shozo Umetsu, Takeshi Nishizaki
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Patent number: 4761267Abstract: An aluminum alloy-core material for brazing, having improved secular corrosion resistance is provided, by a composition of 0.5.about.1.0% of Cu, 0.5.about.1.0% of Mn, 0.10.about.0.30% of Ti, 0.3% or less of Fe, less than 0.10% of Si, and balance of Al, and contains, occasionally at least one element selected from the group consisting of from 0.05 to 0.4% of Mg, from 0.05 to 0.4% of Cr, and from 0.05 to 0.4% of Zr. The alloy is free of an Al-Fe intermetallic compound, has an improved resistance to pitting corrosion and exhibits only a slight reduction in mechanical strength after brazing.Type: GrantFiled: February 3, 1987Date of Patent: August 2, 1988Assignee: Sky Aluminium Co., Ltd.Inventors: Shinji Takeno, Seishi Nakamoto, Kouhei Oono
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Patent number: 4702981Abstract: A photoconductive member has a support comprising aluminum as the main component and a photoconductive layer. The photoconductive layer is provided on the support and contains an amorphous material comprising silicon atoms as a matrix. The support comprises an aluminum alloy with a Fe content of 2000 ppm by weight or less.Type: GrantFiled: June 6, 1986Date of Patent: October 27, 1987Assignee: Canon Kabushiki KaishaInventors: Yasuyuki Matsumoto, Keiichi Murai, Tadaji Fukuda, Kyosuke Ogawa
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Patent number: 4634656Abstract: An aluminum alloy, a lithographic printing plate support, a lithographic printing plate using the aluminum alloy are disclosed. The aluminum alloy is comprised of aluminum containing 0.20 to 1.0% Fe and 0.005 to 0.1% of elements selected from the group consisting of Sn, In, Ga and Zn. The support composed by the aluminum alloy can be chemically etched with an acid and/or an alkali solution and after undergoing etching the surface of the support is uniformly etched. The uniformly etched surface may be provided with a subbing layer or an anode oxidation film. The support is coated with a light-sensitive layer and utilized as a lithographic printing plate.Type: GrantFiled: June 1, 1983Date of Patent: January 6, 1987Assignees: Fuji Photo Film Co., Ltd., Sumitomo Light Metal Industries, Ltd.Inventors: Azusa Ohashi, Akira Shirai, Hirokazu Sakaki, Zenichi Tanabe, Shin Tsuchida, Yoshikatsu Hayashi
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Patent number: 4603029Abstract: An aluminum-lithium alloy exhibiting good fracture toughness and relatively high strength has a nominal composition of 2.5 percent lithium, 0.6 percent magnesium, 1.8 percent copper, 0.12 percent zirconium with the balance being aluminum and trace elements.Type: GrantFiled: March 13, 1985Date of Patent: July 29, 1986Assignee: The Boeing CompanyInventors: William E. Quist, R. Eugene Curtis, G. Hari Narayanan